We started at the Visitor Center, (very close to Interstate 80); headed west till we came to the feeder basin and headed north for 4 miles, turned around (due to poor conditions) and went back to the feeder basin to continue west for another 4 miles, then headed back to the visitor center. Total round trip around 27 miles.
We are not from the area and were looking to break up a long car drive, this seemed like the perfect location. I must say the scenery is beautiful, we saw many wild animals, biked thru a patch of grasshoppers (hundreds of them), saw beautiful herons, a long nosed fish and a flock of wild turkeys - stunning!
But as for the path, well I could not tell any paved stretches. Most was light soft gravel or overgrown tire tracks, but the worst part was how overgrown the side brush was, covering 1/2 to 3/4 of the path, especially in the northern section. I was hit by so many branches (we were there in late August, it didn't look like any mowing or trimming had been done all summer). Between that and having to watch for obstructions in the path, it was not very enjoyable. To me the path was very "bumpy" and trying even a pace of 10 - 12 miles an hour was tough.
If you're out for a leisurely stroll, this may be a good path, but the section we rode needs maintenance. And it was very disappointing when we arrived at the Visitor Center on a Monday afternoon, for it to be all closed up, no maps, no bathrooms. The one bathroom we stopped at on the northern section was a mess.
This path has potential, it's a shame it seemed to me no one maintains it.

Overgrown foliage and thorn vines across the path. Bring your own clippers or take another route for access to Clear Creek.

Parked where I-74 crosses the river Headed west along the trail but the headwinds were so strong I turned around and went east but ended up in a warehouse district alone so came on back. A well maintained trail with lots of bikers and walkers enjoying it

Great job of clean up on the east end since last fall. Grass area west of Springville is a nice ride even on a hybrid. Last September it was largely impassable with downed trees from the derecho, but looks good now.

Hi everyone-- did the trail July 31, 2021 on a Diamondback Insight Hybrid, 75 degrees and partly cloudy day.

The trail is...not bad. I wanted to give it 3 1/2 stars, so will round up here. I crossed the state --largely using I&M Canal + Hennepin along the way-- starting at Co. road 1200 E (NW of Wyanet) going all the way to Colona, near the Quad Cities. Generally, the further west you go the better in terms of trail surface. Where I started on the eastern portion it was like riding on 'crushed peat' -- grassy and narrow. The asphalt-ish surface starts around I-80 and goes northwesterly from there. There are a few spots that are 'large' gravel but I wouldn't get too worried about that.

I wish the Hennepin was more marked (mile markers, etc) like the I&M Canal. Not much you can do about the lack of services, so bring plenty of water, snacks and a fully-charged cell phone. Princeton and Geneseo are great bookend towns, so to speak, although Princeton is a bit north of the trail. Very peaceful ride, although a little monotonous after a while. The feeder basin area (where the Rock Falls spur branches off) is pleasant.

A hybrid or mountain bike is 'probably' the best way to go here...especially on a dry surface...which I had, thankfully.

Dreaming a bit here...but I think a fully-paved trail between the Quad Cities to the Indiana border, largely using the Hennpin, I&M Canal and Old Plank Road Trails would be amazing and a financial boon to towns along the way. But the cost of constructing such a thing.............

Beautiful path, partly through woods. Scenic, quiet and not very busy.

A couple buddies and I rode the Hennepin Canal trail Memorial Day weekend from approximately Wyanet to the Quads, then took the Great River Trail up to Fulton, country roads to Sterling/Rock Falls, and back down on the north branch of the Hennepin. Great two-day ride, about 130mi. We had one gravel bike, one MTB, and one roadie. Gravel was definitely best, but we all did great. About half the Hennepin is paved, the rest fine gravel or soft dirt. Maybe a couple spots with chunky gravel or potholes, but nothing too difficult. Even the sections that are supposedly in the worst disrepair (north branch between Rt 92 & I-88) are easily rideable. I’m sure it coulda been difficult on skinny tires if there had been recent rains, but the trail was totally dry and the guy on skinnies was fine. Honestly, don’t get scared by some of the reviews on this site. No, it’s not perfectly maintained pavement, but if you want to set personal speed records on your carbon roadie, go somewhere else. This path is a bit more rugged, more remote and wild, but its still Northern Illinois, it ain’t THAT hard. An experienced biker with a moderate sense of adventure can handle this on just about any bike. Just make sure you have water, some snacks and a charged cellphone. Overall, I’d say this is a great loop for anyone looking for a long but fairly easy ride. Easy trip out from the Chicago area, Quads or Central Illinois.

Enjoy the trail every time I get to ride it.

Great trail! Beautiful countryside. There's an area you have to watch out for holes in the trail.